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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Cash flows from operating activities    
Net loss $ (26,663) $ (2,408)
Adjustments to reconcile net loss to cash (used in) provided by operating activities    
Depreciation and amortization 31,099 29,450
Equity-based compensation expense 5,701 4,208
Amortization of deferred financing costs 205 41
Deferred tax benefit (11,060) (3,303)
Provision for (recovery of) bad debts (91) 381
Gain on sale of assets (1,472) (770)
Changes in fair value of investments (1,013) 94
Realized loss on sale of investment 478 0
Unrealized loss on derivatives 456 974
Other (1,876) 0
Changes in operating assets and liabilities    
Accounts receivable (10,030) 33,005
Inventories 4,732 828
Other current assets 1,045 189
Other assets 547 (13)
Accounts payable 2,112 (2,862)
Deferred revenue (3,716) (5,156)
Accrued and other current liabilities 2,374 (6,466)
Other non-current liabilities (2,263) (2,029)
Net cash (used in) provided by operating activities (9,435) 46,163
Cash flows from investing activities    
Purchases of property, plant and equipment (11,720) (8,268)
Proceeds from sale of assets and equipment 1,636 1,181
Purchase of investments (59) (736)
Proceeds from sale of investments 2,899 0
Net cash used in investing activities (7,244) (7,823)
Cash flows from financing activities    
Repayments of borrowings (72) (2,782)
Proceeds from borrowings 4 96
Dividends paid on common stock (16,703) (23,300)
Distribution to noncontrolling interest 0 (5,012)
Net treasury shares withheld (1,802) (584)
Proceeds from the issuance of ESPP shares 526 388
Net cash used in financing activities (18,047) (31,194)
Effect of exchange rate changes on cash (860) (707)
Net increase (decrease) in cash and cash equivalents (35,586) 6,439
Cash and cash equivalents at beginning of period 319,526 602,359
Cash and cash equivalents at end of period $ 283,940 $ 608,798